42829845921 has 24 divisors (see below), whose sum is σ = 62222045184. Its totient is φ = 28388754240.

The previous prime is 42829845913. The next prime is 42829845937. The reversal of 42829845921 is 12954892824.

42829845921 is a `hidden beast` number, since 4 + 2 + 82 + 98 + 459 + 21 = 666.

It is not a de Polignac number, because 42829845921 - 2³ = 42829845913 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42829845521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3943120 + ... + 3953966.

It is an arithmetic number, because the mean of its divisors is an integer number (2592585216).

Almost surely, 2^42829845921 is an apocalyptic number.

It is an amenable number.

42829845921 is a deficient number, since it is larger than the sum of its proper divisors (19392199263).

42829845921 is a wasteful number, since it uses less digits than its factorization.

42829845921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13341 (or 13338 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 42829845921 in words is "forty-two billion, eight hundred twenty-nine million, eight hundred forty-five thousand, nine hundred twenty-one".